Simple (reversible!) Termi baffle mod. for 1100Evo

Luddite · 04-06-2018, 06:00 PM

This mod is quick, simple, cheap and reversible (and proves I've got too much time on my hands!).

Problem: You've bought your Termis but are a bit disappointed with the sound. Not surprising when you see the standard baffles - they are fully closed at one end and the only exit for the gasses is the three small slots just in front of the end.

You can remove the baffles completely, but may find the unsilenced cans too loud/antisocial (depending on your conscience!).

So, what can you do? You could buy a pair of Desmoworld billet baffles:

https://www.desmoworld.com/desmoworl...-paar-53?c=497

I've got a set and they sound good but they're not cheap at £75 a pair.

You could just modify the standard baffles but what happens at MOT time if the tester's a bit picky? (A spare set of Termi baffles is also about £75.)

For a little over £6 you can get a length of steel tubing with an inner diameter of 30mm to exactly match the 30mm outer diameter of the baffle tube.*

https://www.ebay.co.uk/itm/Mild-Stee...n/253136715957

This allows you to cut the end off the standard baffle but still to replace it come MOT time or if you have second thoughts.

Just cut the original baffle tubes about 90mm from the closed end and clean up the edges on both parts. Then cut two 60mm lengths of tubing and slide them onto the exit pipe.

To restore full silencing, just push the cut portion of the baffle back into the new piece of tube until it's fully home.

The steel tube is a very snug interference fit over the old baffle so I've not bothered with any fixings at this stage. However, if it becomes loose, I can try exhaust paste or drilling a hole and pop-riveting or slotting the tube and clamping it.

With the tube in place, it's quieter than the Desmoworld baffles but still deeper in tone and with a crisper edge than standard. The Desmoworld baffles are 33mm diameter as against 28mm for the standard and are also shorter than my modded ones.

I've now got five volume levels to choose from, depending on mood or occasion!

Fully silenced
Open-ended long tube
Open-ended no tube
Desmoworld baffles
No baffles

*Actually, I've enough tube left for another pair of baffles so, if you fancy trying it, just PM me your address and I'll post it on to you (fancy trying it, Jimi216?).

04-06-2018, 06:00 PM	#1
Luddite Registered User Join Date: Aug 2011 Location: Southampton Bike: M1100evo Posts: 2,465	Simple (reversible!) Termi baffle mod. for 1100Evo This mod is quick, simple, cheap and reversible (and proves I've got too much time on my hands!). Problem: You've bought your Termis but are a bit disappointed with the sound. Not surprising when you see the standard baffles - they are fully closed at one end and the only exit for the gasses is the three small slots just in front of the end. You can remove the baffles completely, but may find the unsilenced cans too loud/antisocial (depending on your conscience!). So, what can you do? You could buy a pair of Desmoworld billet baffles: https://www.desmoworld.com/desmoworl...-paar-53?c=497 I've got a set and they sound good but they're not cheap at £75 a pair. You could just modify the standard baffles but what happens at MOT time if the tester's a bit picky? (A spare set of Termi baffles is also about £75.) For a little over £6 you can get a length of steel tubing with an inner diameter of 30mm to exactly match the 30mm outer diameter of the baffle tube.* https://www.ebay.co.uk/itm/Mild-Stee...n/253136715957 This allows you to cut the end off the standard baffle but still to replace it come MOT time or if you have second thoughts. Just cut the original baffle tubes about 90mm from the closed end and clean up the edges on both parts. Then cut two 60mm lengths of tubing and slide them onto the exit pipe. To restore full silencing, just push the cut portion of the baffle back into the new piece of tube until it's fully home. The steel tube is a very snug interference fit over the old baffle so I've not bothered with any fixings at this stage. However, if it becomes loose, I can try exhaust paste or drilling a hole and pop-riveting or slotting the tube and clamping it. With the tube in place, it's quieter than the Desmoworld baffles but still deeper in tone and with a crisper edge than standard. The Desmoworld baffles are 33mm diameter as against 28mm for the standard and are also shorter than my modded ones. I've now got five volume levels to choose from, depending on mood or occasion! Fully silenced Open-ended long tube Open-ended no tube Desmoworld baffles No baffles *Actually, I've enough tube left for another pair of baffles so, if you fancy trying it, just PM me your address and I'll post it on to you (fancy trying it, Jimi216?).